| Year | Value | | 2022 | 9,874,202 | | 2021 | 9,818,163 | | 2020 | 9,720,358 | | 2019 | 9,589,082 | | 2018 | 9,420,150 | | 2017 | 9,254,199 | | 2016 | 9,111,944 | | 2015 | 9,004,176 | | 2014 | 8,911,559 | | 2013 | 8,821,764 | | 2012 | 8,736,586 | | 2011 | 8,651,769 | | 2010 | 8,566,180 | | 2009 | 8,479,648 | | 2008 | 8,392,523 | | 2007 | 8,308,544 | | 2006 | 8,227,292 | | 2005 | 8,146,398 | | 2004 | 8,065,716 | | 2003 | 7,984,277 | | 2002 | 7,899,562 | | 2001 | 7,812,408 | | 2000 | 7,724,143 | | 1999 | 7,634,572 | | 1998 | 7,543,261 | | 1997 | 7,447,971 | | 1996 | 7,349,292 | | 1995 | 7,248,291 | | 1994 | 7,143,824 | | 1993 | 7,036,702 | | 1992 | 6,928,025 | | 1991 | 6,817,011 | | 1990 | 6,706,184 | | 1989 | 6,597,765 | | 1988 | 6,491,774 | | 1987 | 6,388,742 | | 1986 | 6,289,102 | | 1985 | 6,193,559 | | 1984 | 6,101,695 | | 1983 | 6,013,032 | | 1982 | 5,926,028 | | 1981 | 5,839,368 | | 1980 | 5,753,879 | | 1979 | 5,669,474 | | 1978 | 5,584,389 | | 1977 | 5,498,621 | | 1976 | 5,414,619 | | 1975 | 5,330,494 | | 1974 | 5,245,766 | | 1973 | 5,161,493 | | 1972 | 5,077,623 | | 1971 | 4,994,475 | | 1970 | 4,910,882 | | 1969 | 4,827,029 | | 1968 | 4,742,709 | | 1967 | 4,658,087 | | 1966 | 4,573,538 | | 1965 | 4,488,093 | | 1964 | 4,400,944 | | 1963 | 4,313,561 | | 1962 | 4,225,757 | | 1961 | 4,137,142 | | 1960 | 4,049,247 |
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